3 branches with an example on how to use native base, an example on how to use your own theme in native base and a whatsappClone example using native base.
$ git clone https://github.com/HackersYacht/nativebaseExample.git
$ cd nativebaseExample
$ npm install
$ react-native run-android
$ git checkout whatsappThemed
$ react-native run-android
$ git checkout whatsappClone
$ react-native run-android